The modchip has a 2MB flash; can be flashed on PC through USB; 3 ways to install it (solderless (spiked pogopins), with headerpin or with wires); external disable and enable switch; MOD status LED indicator; optional Eject switch reset (this will boot with modchip on if you press eject for 1sec, if you press eject for 3sec modchip will be disabled - requires 1 extra wire).More info on: http://www.dms3.com/xspecs.htm